Start with how you want to manage fertilisation. Then choose the bottle size and additions that suit your aquarium.
Choose your routine
Fusion
I want a simpler routine
Macro and micronutrients in one formula. An option for keeping base nutrition in a single bottle.
Macros + Micros
I want to adjust each component
Two separate products let you manage macro and micronutrients independently. You can also replace only the bottle you need.
Core Nutrition
I want both products in a pack
Contains Macros + Micros. Choose it if you prefer managing these components separately and need both products; check the included sizes on the product page.
Avoid overlapping base nutrition
Fusion and Macros + Micros are two ways to organise base nutrition. Start by choosing one approach. If you already use Fusion and want to add Macros or Micros, review the dose and the specific need with Hydra support first.
250 or 500 ml?
250 ml means a smaller initial purchase. 500 ml offers a better price per volume within the same product. How long it lasts depends on dosing, actual aquarium volume and your routine.
| Product | 250 ml | 500 ml |
|---|---|---|
| Fusion | 14.99 €6.00 € per 100 ml | 24.99 €5.00 € per 100 ml |
| Macros | 9.49 €3.80 € per 100 ml | 15.49 €3.10 € per 100 ml |
| Micros | 9.49 €3.80 € per 100 ml | 15.49 €3.10 € per 100 ml |
Reference prices as of 27 October 2026, excluding delivery. Each product page shows the current price. Compare sizes of the same product; price per volume does not imply equivalent dosing between products.
When should you choose a pack with additions?
Choose additions for their function and the routine you want to maintain. You do not need to work through every pack in order.
Pro Nutrition
Contains: Macros + Micros + Carbon
If you want these three products in your routine.
Pro Nutrition Plus
Contains: Macros + Micros + Carbon + Safe
If you also need the Safe water conditioner.
Pro Growth
Contains: Macros + Micros + Carbon + Dark Magic
If you want to include Dark Magic in your fertilisation routine.
Pro Growth Plus
Contains: Macros + Micros + Carbon + Dark Magic + Roots
If you also need root nutrition, for example with an inert or depleted substrate.
Check the volumes included in each pack size. Follow the instructions for each product and adjust the routine to your aquarium's response.
Before you decide
- Identify your aquarium's actual water volume and current routine.
- Choose Fusion or Macros + Micros for base nutrition.
- Add other products only when you need their function.
- Choose bottle size based on expected use and budget.
Still unsure?
Tell us your aquarium volume, whether you use CO₂, your current products and what you want to improve. We will help you choose and avoid unnecessary purchases.